Theory of Machine
Which of the following would constitute a link?

Piston, piston rod and cross head
Piston, crank pin and crank shaft
Piston and piston rod
Piston rod and cross head

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Theory of Machine
Pitch point on a cam is

The point on cam pitch curve having the minimum pressure angle
Any point on pitch circle
The point on cam pitch curve having the maximum pressure angle
Any point on pitch curve

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